Window lock



Nov. 14, 1939. E. PEREMI ET AL 2,179,728

WINDOW LOCK 7 Filed June 4, 1956 2 Sheets-Sheet 1 IN VENTORS Eanwva PEREM/ ATTORNEYS Nov. 14, 1939. I E P M] ETAL 2,179,728

WINDOW LOCK Filed June 4, 1936 2 Sheets-Sheet 2 l I 1 I I I i I I I a 1 I I l I I I. I 1' I I l l A, I

INVENTORS fp/vu/va PEREM/ 1 ATTORNEYS Patented Nov. 14, 1939 UNITED STATES PATENT OFFICE 3 Claims.

This invention relates to window looks or latches and more particularly to looks or latches for windows of the swinging sash type, such as casement windows.

5 It is an object of the invention to provide a lock mechanism for a casement window of the kind in which the sash swings outward, which can be mounted along the margin of the frame remote from the hinge, which can be operated from the inner side of a screen interposed between the sash and the operator, and which will not interfere with the removal of the screen from the frame.

It is a further object of the invention to provide a locking mechanism of simple construction which can be caused to lock the sash securely at a single point or at a plurality of widely spaced points by the mere manipulation of a single operating handle disposed within convenient reach of the operator.

It is a further object of the invention to provide a locking mechanism with a chambered or beveled bolt and keeper arrangement, the function of which is to pull the sash in from a partly lock operating handle.

It is a further object of the invention to provide a locking mechanism in which the operating handle acts as a counter-weight to hold the latch closed and to prevent the latch from being worked loose by the wind.

It is a further object of the invention to provide a locking device which employs no springs so that the usual trouble encountered from the breakage of springs is avoided.

It is a further object of this invention to provide a rack and pinion locking device for windows in which the rack and the pinion shall be mounted in a housing member so that without +regard to the wear or damage to the window, the

locking device cannot become inoperative by disassociation of the rack and the pinion, as the same are held firmly in proper relation by the integral housing in which the parts are mounted.

Other objects and advantages will hereinafter appear.

In the drawings forming part of this specification,

Fig. 1 is a fragmentary view in front elevation :?of a portion of a building wall having a window composed of three swinging sashes mounted in it;

Fig. 2 is a fragmentary sectional view taken on the line 2--2 of Fig. 1 looking in the direction of the arrows;

Fig. 3 is a fragmentary sectional view taken on opened position by the mere operation of the the line 3--3 of Fig. 1 looking in the direction of the arrows;

Fig. 4 is a fragmentary sectional View taken on the line 44 of Fig. 1 looking in the direction of the arrows;

Fig. 5 is a fragmentary sectional view taken on the line 5-5 of Fig. 1 looking in the direction of the arrows;

Fig. 6 is a fragmentary View in front elevation showing substantially the same parts shown in Fig. 5; and

Fig. 7 is a fragmentary perspective view of the parts shown in Figs. 5 and 6, the operating handle being shown in an unlocked position.

In Fig. 1 disclosure is made of a fragment of a building wall I having awindow frame 2 mounted therein. The window comprises in addition to the frame, an outwardly swinging vertically hinged panel 3, an inwardly swinging upper transom 4, and an inwardly swinging lower sash 5. The screen 6 (not shown in Fig. l) is mounted to cover the sash 3 at the inner side of the frame.

'For the purpose of locking the sash 3 in closed position provision is made of a gear segment I having an operating handle 8. The segment I is mounted upon a bearing pin 9 carried by ears I0 of a guide housing I I which is mounted on the frame. The gear segment I meshes with a rack I2 which is mounted for sliding movement in the channel shaped housing II. Rods I3 are threaded into the rack I2 and extend upward and downward therefrom along the margin of the frame. Rotation of the pinion I in a clockwise direction as shown in Figs. 2, 5 and '7 moves the rack I2 and the rods I3 upward to lock the window at a plurality of points, and operation of the handle 8 in a counter-clockwise direction moves the rack I2 and the rods I3 downward to unlock the window. The rack I2 has formed upon one of its sides a projecting bolt I4 which is adapted to be moved into and out of a notch formed in a keeper 15 which projects inward from a stile I6 of the sash. The rods I3 have similar bolts I! mounted upon them for engagement with keepers I8 car ried by the stile I6 adjacent the upper and lower ends of the window. The bolts I! travel in guide housings Ila.

It will be seen that the housing II with the rack I2 and pinion or gear segment I mounted therein comprises a self-contained locking unit. The relation between the rack and the pinion may preferably be established by the manufacturer, whereupon the self-contained unit may be applied in the field without any adjustment or any risk of inefficient handling by unskilled workers. Furthermore no matter what wear and tear may occur on the window, the rack and pinion of the operator cannot become disengaged and will always remain in their originally set proper relationship.

The weight of the handle tends to swing the handle downward, and the handle is so designed that the movement exerted by its weight is sufficient to overbalance the bolts i4 and .l'! and the rods Hi, to prevent accidental unlocking.

Each bolt has a beveled face Ma and a straight face [4b and the keeper notch is complementary in shape to the bolt end, except that at the lower end of a straight face l5a. provision ismade of a short beveled face i512. The faces Ma and l5b constitute coacting, camming surfaces for forcing the window sash to fully closed position as the bolt is thrust upward by operation of the handle 8.

In the illustrative embodiment, the screen 6 is formed with marginal recesses H] to receive the keepers l8, and with edge recesses 20a to accommodate the bolts l4 and H. The ears l0 project inward beyond the screen and the handle, 8 normally overlies a marginal portion of the screen. A cover plate 20 mounted on the inner face of the screen extends over the recess l9 and over the face of the housing H. The cover plate 20 has upper and lower flanges 2i and 22 which partially cover the ends of the housing II and seal the housing against the admission of insects. When it is desired to remove the screen 6 to permit the window to be cleaned or for any other purpose the screen is unlatched from the frame (the screen latching means not being shown), and the handle 8 is swung to a horizontal position. The screen may then be moved away from the window frames without being in any way obstructed by the handle or by the bolts l4 tion with a window frame and a swinging sash hingedly mounted thereon to swing outward to I an open position, of a notched keeper mounted on the inner face of the sash and a self-contained locking unit mounted on the inner face of the frame, said locking unit comprising a rack, a pinion and an integral channel shaped housing, the base of said channel being secured to the window frame and the sides of the channel extending inwardly of the window opening, the outer side forming a guide for movement of the rack in a definite path, said rack having an integral portion forming a bolt, extending laterally between the sides of said channel and adapted to engage in the notch in said keeper to lock the window, the inner side of said channel having inwardly extending cars, a pivot mounted on said ears parallel to the plane of the window and inwardly of said plane, said pivot forming a mounting for said pinion and a swinging operating handle for rotating said pinion and thereby reciprocating the rack.

2. In a metal casement window, the combination with a window frame and a swinging sash hingedly mounted thereon to swing outward to an open position, of a notched keeper mounted on the inner face of the sash and a self-containing locking unit mounted on the inner face of the frame, said locking unit including a channel shaped housing comprising a base secured to the frame perpendicular to the plane of the window, inner and outer side portionsextending inwardly of the window opening, said inner side portion having a flange extending toward the outside of the window, a rack mounted for reciprocating movement along the inner face of said outer side portion, said rack having teeth on its face toward the inside of the window, and having a bolt portion projecting laterally therefrom between said outer portion and said flange of said inner portion, said bolt being adapted to engage in the notch in said keeper to lock the window, inwardly extending parallel ears on the inner side portion of said housing, a pivot mounted between said ears, parallel to the plane of the window and inwardly of said plane, a pinion mounted on said pivot and held in permanent engagement with said rack by its pivotal mounting on said ears of said inner side portion and a swinging operating handle for rotating said pinion and thereby reciprocating the rack.

3. In a metal casement window, the combination with a window frame and a swinging sash hingedly mounted thereon to swing outward to an open position, of a notched keeper mounted on the inner face of the sash and a self-containing locking unit mounted on the inner face of the frame, said locking unit including a channel shaped housing comprising a base secured to the frame perpendicular to the plane of the window, inner and outer side portions extending inwardly of the window opening, said inner side portion having a flange extending toward the outside of the window, a rack mounted for reciprocating movement along the inner face of said outer side portion, said rack having teeth on its face toward the inside of the window, and having a bolt portion projecting laterally therefrom between said outer portion and said flange of said inner portion, said bolt being adapted to engage in the notch in said keeper to lock the window, inwardly extending parallel ears on the inner side portion of said housing, a pivot mounted between said ears, parallel to the plane of the window and inwardly of said plane, a pinion mounted on said pivot and held in permanent engagement with said rack by its pivotal mounting on said ears of said inner side portion, and a swinging operating handle for rotating said pinion and thereby reciprocating the rack, said sash also having additional notched keepers spaced from said first named keeper, said window frame carrying guide housings spaced from said first named housing, bolts mounted in said guide housings and adapted to be engaged with said spaced keepers, and operating rods connecting said bolts with said rack whereby, when said rack is reciprocated by swinging the handle and rotating the pinion, said bolts will be caused to engage or disengage said keeper notches simultaneously.

EDMUND PEREMI. LOUIS TOTH. 

